Official licensed M27 from H&K; Umarax & VFC - Unique individual serial number. - 6.01mm inner barrel - maple leaf nub - Prowin rotary HopUp. - original case - LCAM optic - Extra mags - Flashlight and PEQ box. - new 16guage wire/ Deans connector. - shimmed the gears.. dialed in perfectly. - cylinder: one solid piece. - 140mm spring - lonax A1- high torque motor. This replica is 1 of 500 made.